K&F CONCEPT 55mm Variable ND Lens Filter ND2-ND400 (1-9 Stops) Ultra Slim

Great price, reliable, and high quality glass

Excellent product I got a chance to use it right away on a small film camera. I’m just waiting to see the results when I developed the film, but I’m sure it’s gonna be fine.

This is not a bad filter for the price. I took it out for a trial run doing some waterfall shots this past weekend (you can see the results attached). My overall impressions: - The picture quality was pretty good, but not always tack sharp. - It does suffer from the dreaded black X at the MAX ND setting, but no issues on the lower settings. - It was nice to be able to adjust the ND setting on the fly rather than having to swap out filters. In fact, I frequently found myself adjusting it to the MIN setting to check composition and then moving back towards MAX to take the shot. - The build quality seems good and turning the filter felt smooth and fluid. - No hard stops at MAX or MIN settings, so you have to pay attention there. - The indicator dots don't tell you what ND setting you are on, so you need to keep track. - The filter is larger on the incoming end, so the lens cap from your lens will not fit. - I notice some lens flare with the ND filter when the sun is near the viewing angle that don't show up with just the lens. Since my lens shade does not fit due to the filter end being larger, I had to manually shade the lens to make the flare go away. Overall, pretty decent for a variable ND filter. I probably wouldn't use it for professional-quality pictures, but it works for someone just wanting to try an ND filter and not wanting to have to lug around a whole set of filters on a shoot.

The vignetting and 'X' cross was way too much on my wide angle lenses, I returned this and purchased the K&F NF 3 filter set. NOTE: I have updated this review to 5 stars as This company, who accepted my return with no issues, just contacted me and offer me a full explanation of what caused my issue as well as additional compensation to make me feel better. That, my friends is customer service! BTW, I was so impressed that I declined the offer, they refunded my money for the original purchase and that is all I could ask for.

I absolutely love this ND Filter! I have it in three different sizes. It attaches easily to your lens and works great. I love that I get to choose how dark I want it to go. It does give off a slight yellow/greenish tint but I don’t mind it. Definitely a great product for the price!

Well, the ND filter simply does its job. It gives me a lot more control over the 16mm f/1.4 lens from Sigma, which is an excellent piece of glass. Since it is a fast, wide angle lens, there can be challenges which are easily dealt with using an ND filter. I did read the comment from a reviewer that mentioned an dark "x mark" across his image. I had to see if I could replicate it with this. I cranked the filter way past what I would have normally set it for, and was able to see the x as well. Neat. It's easily fixed though. Just don't "crank" an ND filter further than is necessary. I have a feeling that most all of them will exhibit the same characteristic, so it's just a matter of operator procedure to see that it doesn't happen. Honestly, I had never noticed it, simply because it was a setting that was never called for, given any of the lighting conditions I was shooting in. I can go to manual settings on my camera, and get a blacked out image, if I push the settings into "deep space", but why would I? Otherwise, the filter shows good edge sharpness, and no detectable distortion, but I'm not terribly picky. It gets rid of what problems I might have had with a high speed, wide angle lens, which is what I bought it for. Nice ND filter, and I'd buy it again.

Great ND filter.

This filter is nicely packaged, operates smoothly, and covers a wide range of stops so I was really disappointed when I discovered it did not play nice with my cameras. On both my Sony a7iii and a6600 the filter would produce a dark "X" in the image instead of evenly attenuating the light. I assume this is a polarization interaction. In any event, this is a very nice filter, it just didn't work on my equipment.

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Da ich keine Lust habe, mir verschiedene ND-Filter zu kaufen und für meine Fotografie variable Filter definitiv ausreichen, habe ich mich entschlossen, diesen Filter zu kaufen--> Verarbeitung ist sehr gut, Ring lässt sich sbenfalls sehr gut und leicht einstellen, leichte Vignetierung, aber für Portraits perfekt geeignet--> klar ist die letzte Stufe der Einstellung mit Bildfehlern nicht zum Fotografieren geeignet, aber für - wie gesagt- bei Portraits und meiner Art der Landschaftsfotografie bei extremer Sonne mehr als ausreichend. Da ich per se fast immer eine Vignetierung bei meinen Fotos hinzufüge, stört mich diese beim Filter definitiv nicht--> macht genau das, was er für mich soll--> klare Kaufempfehlung. LG Mark

El uso de repente hace que se vea como telaraña la imagen

Nice

It leaves the purple lines on the edges